Combined rotary pump and motor



C. TOWNSEND.

COMBINED ROTARY PUMP AND MOTOR.

APPLICATION FILED AUG. 10, 1918.

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5 SHEETS-SHI; ET 3.

APPLICATION FILED AUG. 10. 1918.

- i/WEA/TOR Arm/Mfrs C. TOWNSEND. COMBINED ROTARY PUMP AND MOTOR.

APPLICATION FILED AUG. 10, 1918. I

Patented Apr. 27, 1920.

5 SHEETS-SHEET 41 fig lllllld.

Arrow/Era,

C. TOWNSEND. COMBINED ROTARY PUMP AND MOTOR.

5 SHEETS-SHEET 5-.

APPLICATION FILED AUG. 10, 1918- IANII/ENTOIR A TTORNE Y8.

COPELAND TOWNSEND, OF NEW YORK, N. Y.

COKBINED ROTARY PUMP AND MOTOR.

1 Specification of Letters Patent.

Patented Apr. 27, 1920.

Application fil ed August 10, 1913. Serial No. 249,233.

To all whom it may concern:

Be it known thatI, GoPELANo Towusnm), a citizen of the United States, resldlng at 'New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Combined Rotary Pumps and Motors, of-which the following is a specification.

My invention relates to a combination rotary pump and motor, which can pump large volumes of water if power is supplied thereto, and which can be operated in the reverse manner to supply power if water or other liquid under pressure is supplied thereto.

The object of myinvention is to devise a very compact and powerful pump or motor of the rotary type, which shall be smooth vrunning, noiseless, free from vibration and subject to little wear and tear.

Other objects of my invention are a special combination of parts which supply a large and continuous flow of liquid, and other features which will be disclosed in the following description and drawings, which outer plate.

illustrate a preferred embodiment of my invention. r

Figure 1 is a perspective view of the device embodying my invention. 7

Fig. 2 is a section taken along the horizontal' diameter thereof.

.Fig. 3 is a section taken along the vertical diameter thereof. i Fig. 4 is an inside'view showing the outer and inner plates.'

. Fig. 5'is a face view of one-half of an- Fig. 6 is'an lnner view, partially in section, illustrating the inner ring and other details of. the pumping mechanism.

Fig. 7 is a; horizontal central section on one of the horizontal fins shown in Fig. 6.

Fig. 8 is'adetail view, partially "in sec f tion, showing a fin and its packing.

Fig. 9. is an inner view of the casing showing the ports therein. j Fig. 10, is a faceview of one-half of. an inner plate;

, The device embodies a casing made of two like halves. 5, having flanges 130, which are connected by means of bolts 91. The

' casing has feet which are securely connected to a suitable base plate 84, which is suitabl secured so that any vibration is minimize At .the center thereof the casing 5 is provided with a packingIPox, 90, through which 1 to the interior of the a shaft 9 projects casing. If the shaft 9 is revolved by some suitable source of power, which is not shown in the drawings, then fluid under pressure is supplied by the device which now acts as a pump and if fluid under pressure is led throu h the device in the reverse direction then t e device acts as a motor and rotates the shaft 9.

As can be best seen in Fig. 3, the shaft 9 has an interior tapered portion 92, having a threaded end which co-act-s with a nut 94. This nut 94 has a reduced neck 320 which bears against the adjacent inner plate 8, so that-any axial pla of the shaft is prevented. The shaft 9 has a hub 22 keyed thereto, and the inner plates 8 are secured to this hub 22 by means of screws 23.

' As can be seen in Figs. 4 and 6, each plate 8 has a number of circular openings, 18 therein, into which a series of brackets: 16, project, so that the brackets 16 rest in these circular openings. These brackets 16 have radial arms 20 connected to arcuate shoes or claws '43, which contact with the exterior periphery of an interior floating ring 70. It is preferred to have the shoes 43 merely possess a certain amount of frictional con-' tact with the floating ring 70 althou h, if

desired, some positive connection 0 'any well-known kind could be used so as to in sure the simultaneous rotation of the shoes 43 and floatingring 70.

As shown especially inner pl ate 8 around each side of the floating;l

ring 70, and these inner plates 8 are secure by any suitable. means to an intermediate.

in Fig. 3, there is an ring 170. The brackets 16 are connected at each end to exterior plates 4 by means of rivets 16 or any other suitable means. The H exterior plates 4 fit upon the interior plates 8 in a fluid tight manner, and cafn'jb'e moved radially, independently of theifineraplates 8. The outer plates 4- have an exterior ring 2 secured at their ends by means of screws 3 at 82 and having a hand hold 83 whereby the link 81 can be moved up and down, and

move guide ring 1 and the exterior rin 2 and the brackets 16 so that they are either concentric with'respect to the shaft 9, or can be made eccentric with respect thereto to any extent enabled 'bythe size of the apparatus.

s can be seen especially in Figs. 6, 7 and or other suitable means, and the rin 2 fits tightly. into a guide rin '1 which is connect'ed to rod '80 connecte to link 81 pivoted 8,,the hub 22 has a series of radial grooves therein, which are in line with a correspond- 1 ing series of grooves,440, in plates 8, and fins the said cylindrical packings have a certain amount of tangential play, so that if the plates 8 and the floating ring 70 are rotated simultaneously there is a certain amount of give or play between them, and they are not rigidly connected together. v As the materials used ordinarily for packings of this kind have a certain amount of 1 means of the link 81. If the resilience, this is sufiicient to allow for a certain yield between the fins and their packings 42.. v p

Hence'when the shaft 9 is rotated, the

hub 22 and'the inner plates 8 as well as the intermediate ring 70 are simultaneously rotated therewith. The brackets 16 may be placed in an desired eccentric position by suitably shi ing the outer lates 4 by l rackets 16 are placed in the eccentric positionshown in the drawings, then the innerjfloa'ting ring.

70 also assumes an eccentric position. The rotation of the plates 8 causes*the rotation of the brackets 16 and the shoes '43, and the shoes 43 cause the rotation of floating ring 70 about a center below the common center of ring 170 and hub 22, so that the inner floating ring will have a relative up and down motion combined with he rotation thereof. Home, as shown speciall in Fig. 6, the upper and lower halves o fins 41 will move inwardly and outwardly-in their grooves, and the chambers or inclosed spaces formed by two adjacent fins ,41 and the intermediate 0 posite peripheriesof intermediate ringl 0 and the floating; ring 70, will be greater in volume at the upper end of theapparatus than at the lower end. Conversely, the chambers formed by jacent inner branches of the finsv 41," and the intermediate-opposite peripheries of which may be the entrance pipe; or the floating ring 7O- 'and the hub 22, will be least in volume where the first mentioned chambers or inclosed spaces are greatest and will be gr eates't in volume ,where the first mentioned chambers are smallest.

. The directionof rotation may wise in the view-shown in Fig.- 6. As shown. in Fig. 1, "the casing is provided with pipes 100 and 101,-either one of 'pon the direction of eccentricity of the floating ring. 7 The pipe, 100, as shown in Fig. 1, is

connected to two pipes 33, which are con-- nected with glands 32 in the casing' The be clockannular ports 301 and 301', and inner an-' nular ports 300 and 300. As seen especially in Fig. 9, partitions 50 and 50 are provided which extend from one side of the casing to the other, so that the casing is divided into two spaces, one ofwhich is in communication with the exterior port 301. and the interior port 300 and the other of which is in communication with the exterior port 301 and the interior port 300. As can be seen especially in Figs. 4 and 5, the outer plates '4 are provided with a series of outer ports 35 and inner ports 35 which are adapted to come into communication with the outer and inner ports of the casing respectively.

As is shown especiallyin Fig. 10, the

inner plates 8 are provided with a series of outer ports 15 and inner ports 15' which are adapted to communicate with the ports 35 and 35' of the outer'plates 4..

The parts are secured together by attachments of the ordinary kind.

Thus holes 23 are provided in plate 8 for members 23. As can be seen in Fi 5 holes 113 are provided for screws 3. he

plates 8 are secured to the ring 1'70 by e As can be seen particularly in Fig. 6,

means of bolts passingthrough holes 25.

a guide 102 is provided for the ring 1.

As can be seen particularly in Fig. 3, packing 90 is provided with the usual folports15 and 15' in the p ate 8 which at that time are in communication with the ports 301 and 300'. The fluid therefore enters between the hub 22 and the inner floating ring 70, and between" the intermediate ring fined between these rings.

As can be seen particularly .in Fig. 6,

if the center of the iloating ring, 70; -is

formedby the fins 4-1'and the rings 170 and 70 are largest at the u'pper part of the apparatus, and the chambers between the hub lower part of the apparatus.

When the shaft 9 is rotated in a clockpushed below the shaft 9 then the chambers and the floating ring 70 are largest at the.

wise direction, the hub 22, plate 8, ring 170, brackets 16 and floating ring 70 also rotate therewith, as well as plates 4 andr; A

ring 2.,

115 and the floating ring70, and is con- Since as can be seen particularly in Figs. 6, 7 and '8, the floating ring 70 passes through the fins 41, andsince the fins 41 are provided with the elastic cylindrical packings 42 which make a fluid tight connection with the ring 70, the fins 41 are moved in the grooves 40 to and from the center of the shaft 9, so that as seen especially in Fig. 6, the chambers between the floating ring 70 and the intermediate ring 170 decrease in size as the shaft is rotated and then again increase in size. The same. is true of those chambers between the hub 22 and the floating ring 7 0. As a result the fluid which has been drawn in through the ports 301 and 300 is powerfully expelled through the ports 300 and 301'. These chambers, which may be called discoidal chambers. for convenience, alternately increase and decrease in volume, sucking inliquid as they increase in volume and discharging it as they decrease in volume.- The pipe 101 can be made the entrance pipe if desired by simply re versing the direction and eccentricity of the ring 7 0 and the apparatus could be used as a motor by' forcing in liquid or an aeriform fluid under pressure. Any desired force within large limits can be secured by operating the hand hold 83 since it will be obvious that if the ring 70 is made concentric with the shaft that the pumping effect will be zero.

An important feature of my invention is makin the openings in thefins 41 larger than t e thickness or lateral dimension of the rin 70. and filling up this space inthe fins 41 y means of the cylindrical packings 42 whereby the fins and-the ring'have a certain amount of relative angular movement with respect to each other ,for inequalities in the apparatus, and for the eccentricity -of ring .70. The fins may be swiveled in the packings forthis purpose, to allow a limited angular movement.

I have described a preferred embodiment of my invention but it is clear that numerous changes and omissions can be made in the details thereof without departing from its spirit.

This 'application embodies the invention of my former application, Serial No. 718,17 1,\

filed Sept. 3, 1912, aswell as improvements thereon. i I claim: p 1. In combination, a plurality of spaced ring-like rotatable members, means for simultaneously rotating them together,

means located at the sides of said ring like members for preventing the escapeof fluid forced. in'between them, fins separating the annular spaces 'between the said ring. like members into a plurality of discoidal chambers, means forcausing thesediscoidal chambers to increase in volume during one part of the rotation of the said members,

and for causing the said discoidal chambers to decrease in volume during another part of the said-rotation, and means for conducting fluid to and from the said discoidal chambers, and means for moving one of said ring-like members so that the centers of said ring-like members occupy different relative positions and for holding them in said positions during their rotation.

2. In combination, a plurality. of spaced ring-like rotatable members, means for simultaneously rotating them together, means located at the sides of said ring-like members for' preventing the escape of fluid forced in between them, fins separating the annular spaces between the said ring'-like members into a plurality of discoidal chambers,

means for causing these discoidal chambers to increase in volume duringone part of the rotation ofthe said members, and for causing the said discoidal chambers to decreasev to the said ring-like members, and means for moving one of said ring-like members so that the centers of said ring-like members occupy different relative positions and for holding them in said positions during their rotation.

3. In combinatioma plurality of ring-like members one of which is movable relative tothe others, so that its center can occupy diflerent relative positions, means for shifting said movable ring-like member so that it is eccentric with respect to the other and is held in the said eccentric position, means for simultaneously rotating said ring-like members while they are in the said relative eccentric position, means located at the sides of the ring-like. members for preventing the (escape of fluid introduced into the annular between the said ring like' members into a plurality of discoidal chambers, and means for simultaneously rotating the said ringto and fro during the said rotationand the said discoidal chambers alternately increase and decrease in volume during the said rotation, and means for conducting fluid to like members so that the said fins are moved and from the said discoidal chambers at desired points of the said rotational path.

4. In combination, three ring-like mem-' bers, theinnermost and outermost of said ring-like members being concentric and the intermediate memberbeing eccentric with respect to the other two, means for'simultaneou'sly rotating the three said ring-like members, means located at the sides of said ring like members for preventing the lateral ring-like member being connected to fins which separate the two said annularspaces into discoidal chambers, the rotation of the said intermediate member causing a radial movement of the said fins, whereby the said discoidal chambers alternatelyincrease and decrease in volume, the discoidal chambers in one of said annular spaces increasing in volume while the adjacent discoidal chambers in the other of said annular spaces decrease in volume, and meansfor conducting fluid to and from the said discoidal chambers at predetermined points.

5. In combination, a rotatable shaft car-- rying a 'hub, a series of radial grooves in the said hub, disk like plates secured to the said hub at both sides thereof, a ring .se-

cured to the said platesand forming a fluidtight annular space With respect to' them and the said hub, the said plate having a series of radial grooves in line with the grooves in the said hub, a series of perforations in the said plate, brackets having radial arms resting in the said erforations,

' ing ring held between these shoes and be- I as tween the said hub and the said first mentioned' ring, means for holding the said brackets and shoes concentric or eccentric with respect to the center of the said shaft, so

vthat the said floating ring can beheld concentric or eccentric to the said shaft, fins located in the-said grooves in the hub and in said plates and secured to the said interme diate ring, ina water tight manner, the said fins having a limited angular movement with respect to the said floating ring, means for preventing the lateral escape of fiuidbetween the said floating ring and the said first mentioned ring, and means for conductin fluid to a d from the discoidal chambers ormed between the hub'and the said rings by the said fins, whereby,when the said hub is rotated the I said three rings are simultaneously rotated therewith and the eccentric rotation of the "said floating ring causes a radial movement of thesaid-finsso that the said discoidal chambers alternately increase and decrease in volume the chambers on one sideof-the a floatingring increasing in volume while the adjacent chambers onthe other side of said floating ring simultaneously decrease in volume.

" 6.'In combination, a rotatable shaft care rying a hub, disk-like plates secured to said vto hub on each side thereof, a ring secured to the peripheries of said disk like pl'ates'and concentric with the said hub and shaft, the

said disk like plates having a series of perforations concentric with the said hub and ,7 equally spaced therefrom, brackets located in the said perforations and. having radial 3 arms carrying arcuate shoes, a floating ring earned between these shoes and located between the said hub and the first mentioned. ring, centrally perforated plates exterior to said disk like plates and freely movable with respect thereto in all directionsand making a fluid tight connection therewith,

the said centrally perforated plates extending beyond the said first mentioned'ring' and preventing the lateral escape of fluid intermediate the said floating ring and the said first mentioned ring through theeperforations in the said disk like plat series of alined radial grooves, fins fitting into the said grooves and capable of movement therein and connected in a fluid tight the said brackets being secured to the widowmanner to the said floating ring so that they form a series of discoidal chambers on both the said arms having arcuate s oes, a floatsides of said floating rin and means for conducting fluid to an 8. In 00 bination, a'rotatable shaft havlateral ,faces thereof and extendin and below said shaft, the said plates being-concentric with said hub, the saiddisk-like plates having a series of circular perforations" of equal diameter and concentric. with said hub located therein on all sides of said shaft, outer plates located exteriorly to said disk-like plates and mak- 'from the said discoidal chambers. 7. In combination, a fin having a cylining a cylindrical hub connected thereto so as to rotate therewith, disk-like plates of equal diameter secured to said hub'onaeth a ve isk-like i ing afluid tight connection therewith, said plates and fitting fluid-tight against said exterior plates, which close the said perform tionsin said disk-like plates, brackets parplates and passing through said perforaouter plates being of greater diameter'than said inner plates and always projecting be allel to said shaft and secured to said outer Mom, said brackets carrying radial arms having arcuate; shoes of equal curvature, a floating ring held intermediate said: shoes, the said hub and said disk-like plates hav;

ing a series of alined radial grooves, finsmountedin said groov'es'and capable of radial, movement therein, the said fins having perforations provided'with "a packing on chambers alternately increase-"andidecrease in volume, and ports for. supplying fluid tosaid discoidal chambers as they increase in volume, and for permitting the ejection of said fluid as they decrease in volume. r

' 9. In combination, three ring-like members, means for simultaneously rotating them, means for giving the central ring-like member aradial movement while it is rotating, a plurality of fins connected to saidcentral ring-like member and dividing the annular space between said ring-like members K into discoidal chambers, said finsbeing ca-v pable of a radial movement, means for preventing the escape of fluid from the sides of the said ring-like members, and means for conducting a fluid to and from the said discoidal chambers. n

'In testimony whereof I hereunto afiix my signature.

v I COPELAND TOWNSEND. 

